Utilizing Urea–Chitosan Nanohybrid for Minimizing Synthetic Urea Application and Maximizing Oryza sativa L. Productivity and N Uptake

Omnia M. Elshayb, Abdelwahed M. Nada, Khaled Y. Farroh, Arwa Abdulkreem AL-Huqail, Maha Aljabri, Najat Binothman and Mahmoud F. Seleiman
Additional contact information
Omnia M. Elshayb: Agricultural Research Center, Rice Research and Training Center, Field Crops Research Institute, P.O. Box 33717 Sakha, Kafr El Sheikh 33511, Egypt
Abdelwahed M. Nada: Agricultural Research Center, Rice Research and Training Center, Field Crops Research Institute, P.O. Box 33717 Sakha, Kafr El Sheikh 33511, Egypt
Khaled Y. Farroh: Nanotechnology and Advanced Materials Central Laboratory, Agricultural Research Center, P.O. Box 588 Orman, Giza 12619, Egypt
Arwa Abdulkreem AL-Huqail: Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Maha Aljabri: Department of Biology, Research Laboratories Centre, Faculty of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
Najat Binothman: Department of Chemistry, College of Sciences & Arts, King Abdulaziz University, Rabigh, Saudi Arabia
Mahmoud F. Seleiman: Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia

Agriculture, 2022, vol. 12, issue 7, 1-15

Abstract: In paddy fields, overuse of nitrogen fertilizer to maximize yields can lead to excessive economic loss and degradation of the environment. Therefore, studying the effects of urea–chitosan nanohybrid as a slow released source of nitrogen fertilizer on rice cultivation was the aim of our study. The effects of fertilization applications, namely: CU: control treatment; U1: application of a full recommended dose of classical urea (165 kg N ha −1 ); U2: adding recommended dose of classical urea by 80% + exogenous urea–chitosan nanohybrid 250 mg N/L; U3: adding recommended dose of classical urea by 80% + exogenous urea–chitosan nanohybrid 500 mg N/L; U4: adding recommended dose of classical urea by 60% + exogenous urea–chitosan nanohybrid 250 mg N/L; U5: adding recommended dose of classical urea by 60% + exogenous urea–chitosan nanohybrid 500 mg N/L; U6: adding recommended dose of classical urea by 40% + exogenous urea–chitosan nanohybrid 250 mg N/L; and U7: adding recommended dose of classical urea by 40% + exogenous urea–chitosan nanohybrid 500 mg N/L on growth indicators, yield-related components, grain productivity, and N uptake status of rice plants were investigated during two successive seasons. As a result, significant achievements concerning growth, yield and yield-related traits were obtained when rice plants were fertilized with exogenous urea–chitosan nanohybrid (i.e., 500 mg N/L) + 60% classical urea without a significant decline in the studied traits compared to the full recommended dose of classical urea. Accordingly, this investigation revealed that chitosan nanohybrid at 500 mg N/L as a compensatory alternative can be used in saving 40% of classical urea requirement.

Keywords: urea–chitosan nanohybrid; rice; urea synthetic fertilizers; N uptake; productivity (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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